LDAP Search in JAVA

		Hashtable Env = new Hashtable();
		
		Env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
		
		String url = "ldap://XX.XX.XX.XX:XXX/";
		Env.put(Context.PROVIDER_URL, url);
		
		try {
		    DirContext dctx = new InitialDirContext(Env);
			
		    SearchControls sc = new SearchControls();
		    sc.setSearchScope(SearchControls.SUBTREE_SCOPE);
			
			String filter = "(userid="+userName+")";
			
			String base="ou=Users Data,o=userINFO,ou=userDEV,O=user-D";
	
			NamingEnumeration results = dctx.search(base, filter, sc);

		  // Here i would like to implement if the "userName" is there then say "True" or "False"
		  // But don't know how :(
	        
			System.out.print(results.toString());

		    // Close the context when we're done
		    dctx.close();
		} catch (NamingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}